import ElementUI, { Message } from 'element-ui/index.js'

// 为了实现Class的私有属性
const showMessage = Symbol('showMessage')
/**
 *  重写ElementUI的Message
 *  single默认值true，因为项目需求，默认只弹出一个，可以根据实际需要设置
 */
let messageInstance = null;
class DonMessage {
    success (options, single = true) {
        this[showMessage]('success', options, single)
    }
    warning (options, single = true) {
        this[showMessage]('warning', options, single)
    }
    info (options, single = true) {
        this[showMessage]('info', options, single)
    }
    error (options, single = true) {
        this[showMessage]('error', options, single)
    }
    [showMessage] (type, options, single) {
        if (messageInstance && single) {
            messageInstance.close()//先把原来的关闭
        }
        messageInstance = Message[type](options)//再创建新的消息
    }
}
Vue.prototype.$message = new DonMessage()